Question

Observe the diagram given below and identify what happens after the above stage?

A. The ovary splits open.
B. The ovary develops into a fruit and ovules into seed
C. The ovules are dispersed
D. Germination of seeds takes place

Answer 1

Sexual reproduction in Angiosperms or flowering plants involve pre-fertilization events, fertilization, and post-fertilization events. Pre-fertilization events comprise the formation of reproductive organs, gametogenesis, and gamete transfer (pollination). Fertilization includes the fusion of male and female gamete, and post-fertilization events involve endosperm formation, embryogenesis, seed, and fruit formation.

Complete answer:
Option A, The ovary splits open
In sexual reproduction, fruits split open to release seeds to facilitate seed dispersal, and the given diagram does not represent the splitting of the ovary.
So, option A is incorrect.
Option B, Ovary develops into a fruit and ovules into a seed.
After pollination, the pollen tube germinates and releases two male gametes. One male haploid gamete fuses with a female gamete or egg to form a zygote, and this process is known as syngamy. The second male gamete fuses with the diploid polar nuclei to form a triploid primary endosperm nucleus, and this process is known as triple fusion. Thus, Angiosperm's sexual reproduction containing these two processes is called double fertilization. During post-fertilization, a mature ovule is developed to form a seed, and the ovary develops to form fruit. The ovule is nothing but the anatomical region that contains the egg apparatus, and it is placed within the ovary. Thus, after fertilization within the egg apparatus, the zygote develops for the embryo, and the endosperm supports the embryogenesis.
So, option B is correct.
Option C, The ovules are dispersed.
During seed dispersion, only seeds are dispersed, and seeds are the matured ovules developed after fertilization. The given diagram does not represent ovule dispersion.
So, option C is incorrect.
Option D, Germination of seeds takes place.
Germination of seed takes place after seed dispersion under suitable internal and external conditions. The given diagram does not represent the germination of the seed.
So, option D is incorrect.

So, the correct answer is “Option B”.

Note:
The given diagram represents sexual reproduction events within the pistil, which is the female reproductive organ of the flowering plant. The female gametophyte (embryo sac or megagametophyte) resides within the ovule and is the site of fertilization and post-fertilization events. During post-fertilization events, the ovule matures to form the seeds, and the ovary develops to form the fruit. The seed containing the embryo of the plant which grows differentiates to form the new sample. Thus, certain plants with seed (s) inside fruit disperse the seed by splitting the fruit.